IR3504MTRPBF International Rectifier, IR3504MTRPBF Datasheet - Page 9

• Manufacturer Part Number: IR3504MTRPBF
• Description: IC CTRL XPHASE3 SVID 32-MLPQ
• Manufacturer: International Rectifier
• Series: XPhase3™r

Specifications of IR3504MTRPBF

• Applications: Processor
• Current - Supply: 10mA
• Voltage - Supply: 4.75 V ~ 7.5 V
• Operating Temperature: 0°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: *
• Package: 32-Lead MLPQ
• Circuit: X-Phase Control IC
• Switch Freq (khz): 250kHz to 1.5MHz
• Pbf: PbF Option Available
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SYSTEM SET POINT TEST
Converter output voltage is determined by the system set point voltage which is the voltage that appears at the
FBx pins when the converter is in regulation. The set point voltage includes error terms for the VDAC digital-to-
analog converters, Error Amp input offsets, and Remote Sense input offsets. The voltage appearing at the
VDACx pins is not the system set point voltage. System set point voltage test circuits for Outputs 1 and 2 are
shown in Figures 3A and 3B.
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IR3504
"FAST"
VDAC
IR3504
"FAST"
VDAC
IROSC
IROSC
+
-
Figure 3A - Output 1 System Set Point Test Circuit
Figure 3B - Output 2 System Set Point Test Circuit
+
-
CURRENT
SOURCE
GENERATOR
VDAC
BUFFER
AMPLIFIER
CURRENT
SOURCE
GENERATOR
VDAC
BUFFER
AMPLIFIER
ISOURCE
ISINK
ISOURCE
ISINK
IFB1
ROSC BUFFER
AMPLIFIER
ROSC BUFFER
AMPLIFIER
+
-
REMOTE SENSE
AMPLIFIER
+
-
REMOTE SENSE
AMPLIFIER
IROSC
ERROR
AMPLIFIER
ERROR
AMPLIFIER
+
-
+
-
+
-
1.2V
+
-
1.2V
IROSC
IROSC
IOCSET1
IOCSET2
EAOUT1
FB1
VDAC1
OCSET1
LGND
ROSC
VOUT1
VOSEN1+
VOSEN1-
EAOUT2
FB2
VDAC2
OCSET2
LGND
ROSC
VOUT2
VOSEN2+
VOSEN2-
ROCSET1
RVDAC1
CVDAC1
RROSC
ROCSET2
RVDAC2
CVDAC2
RROSC
SYSTEM
SET POINT
VOLTAGE
EAOUT
VOSNS-
SYSTEM
SET POINT
VOLTAGE
EAOUT
VOSNS-
July 28, 2009
IR3504